C++ (Cpp) gsl_sf_psi_n Beispiele

Beispiel #1

Datei: CUBS_update.cpp Projekt: vinash85/GOAL

int binom_transform_df(const gsl_vector* x, void* p, gsl_matrix* J)
{
  double r = gsl_vector_get(x, 0);
  double s = gsl_vector_get(x, 1);

  double df00 = gsl_sf_psi_1(r);
  double df01 = -1.0 * gsl_sf_psi_1(s);
  double df10 = gsl_sf_psi_n(2, r);
  double df11 = gsl_sf_psi_n(2, s);

  gsl_matrix_set(J, 0, 0, df00);
  gsl_matrix_set(J, 0, 1, df01);
  gsl_matrix_set(J, 1, 0, df10);
  gsl_matrix_set(J, 1, 1, df11);

  return GSL_SUCCESS;
}

Beispiel #2

Datei: SpecialFunctions.hpp Projekt: adityapathak89/scetlib

//------------------------------------------------------------------------------
/// Polygamma function \f$ \psi^{(n)}(x) \f$
inline double psin(const int n, const double x)
{
   return gsl_sf_psi_n(n, x);
}

Beispiel #3

Datei: util.c Projekt: natsuhiko/badjust

double psi_2(double x){
	return gsl_sf_psi_n(2,x);
}